LANSDALE Semiconductor, Inc.

ML12502

www.lansdale.com

Page 5 of 8

Issue 0

All Input and output

cables to the scope are

equal lengths of 50-ohm

coaxial cable.

Notes:

Test 1 – Adjust potentiometer for carrier null at fc = 100 kHz.

Test 2 – Connect pins 5 and 6 to Gnd.

Sampling Volt meter

Hewlett Packard

3406A or Equiv.

Tektronix

454 and 568

Oscilloscopes

Hewlett Packard

651A and 3300B

100 kHz to 100 MHz

@ 30 mVpp

Signal A

Input (Pin 2)

Output (Pin12)

Output (Pin 11)

Signal B Input (Pin 8)

Output (Pin 12)

Output (Pin 11)

Figure 4. Carrier Feedthrough Test Circuits

12

11

Outputs

Null

Adjust

VCC

6

14

5

7

1

10

VEE

Reg.

Bypass

Local Oscillator

Inputs

2

3

8

9

Mixer

Inputs

1.0

µf

1.0

µf

1.0

µf

0.1

µf

0.1

µf

50

+5.0 V

0.1

µf

133

133